code: def _activate_plotly_backend(renderer):
      if renderer == "plotly":
          pn.pane.HoloViews._panes["plotly"] = _PlotlyHoloviewsPane
  
file_path: holoviews/holoviews/plotting/plotly/renderer.py
imports: import base64
  from io import BytesIO
  import panel
  import param
  from param.parameterized import bothmethod
  from ...core import HoloMap
  from ...core.options import Store
  from ..renderer import HTML_TAGS, MIME_TYPES, Renderer
  from .callbacks import callbacks
  from .util import clean_internal_figure_properties
label_desc: Use image node_id 2 for calling a global function with example usage: _activate_plotly_backend(renderer) without return types